Lay-retaining device



H. LINDSAY.

LAY RETAINING DEVICE.

APPLICATION FILED JULY 12, 1920.

1,365,417, Patented Jan. 11, 1921.

iii Yen far Mm. xv

UNITED STATES PATENT OFFICE.

HAMILTON LINDSAY, or CLEVELAND, .OHIO, nssreivon To 'THIJ LINDSAY wmEWEAVING COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF; OHIO. i

tny nn'rnrnme DEVICE.

AppIicatiOn fiIeG July 12,

Toall'wlzom it may concern:

Be it known that I, HAMILTON LINDSAY, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented a certain new and useful Improvement in Lay-Retaining Devices,of which the following is a full," clear, and exact description,reference being had to the accompanying drawings.

This invention relates to improvements in looms for weaving wire cloth,particularly to the type of loom set forth in my. prior Patent1,052,929. In weaving wire cloth on the shuttle loom it has been foundthatthe middle of the lay or batten had a tendency to vibrate when verywide clotlris being woven. This vibration continues while the shuttle ispassing from one shuttle box to the other and it throws the shuttle fromits path and consequently disturbs the alinement of the warp thread.

The object of my invention is to provide means which will prevent thevibration of the lay while the shuttle is passing from one shuttle boxto another. Other objects include the provision of a means which may bepositioned on the frame of a machine and adapted to retain the centerofthe lay dur ing the time in which the shuttle is moving across themachine and to instantly release it thereafter. A

The above and other objects will be here-. inafter more fully set forthin thefollowing description which relates to thefaccompanying drawings.The essential characteristics are set forth in the claims.

In the drawings Figure 1 is a'front ele vation of a loom embodying thefeatures of my invention; Fig. 2 is a cross section through the centerof the loom; Fig. 3 is a large view of the mechanism shown in Fig. 2comprising the retaining device; Figs. 4 and 5 are details of the partsof the mechanism adapted to be used with the retaining I device.

Designating the parts by the use of reference characters, in thedrawings, 10 represents the standards which with the, cross rail 11,comprise the frame of a wire weaving loom, having a customary warp beam12, guide roll 13, and cloth beam 14. Depending from the top of theframe and pivotally connected thereto is the batten 15, which carriesthe lay 16; while positioned at both sides of the frame are the shuttleboxes 17 Specificationof Letters Patent. 7 PatentedjJan ll"11921,

1920. Seria1 No.395,80 7

and the corresponding picker arms 18.

ThismechaniSm set forth in the aforementronedpatent; My presentinvention, pertains to the means forret-aining the centerof the lay in arigid position While the shuttle is passingbetween the ranks from onesideof the machine to the other.-

Looms have heretofore been provided with mechanisms for'preventing thevibra'--" tion of the batten, wherenarrow cloth'is woven, but on widermachines the middle of the lay also has considerable vibration;

which results inthrowingthe shuttle off its track, or course, as' ittravels shuttle box to the other. 1

vThe batten is arranged to swing about a pivoted connection atthe-top'of the frame. As'shown in F ig. 2, the batten 15 is in therearward position and engaged by a pawl 20. This pawl is pivotallyconnected at 19 to a bracket 27 and is operated by a rock shaft 22through a rock arm 21 and a con necting link 23, whereby a rockingmotion of the rock shaft imparts a similar motion to the pawl. Suitablecam mechanism, not shown, operates the rock shaft 22 to so position thepawl 20 that the fin er 30 may engage the center of the lay. "aontinuousen gagement with the la wouldrapidlywear the metal away, so." haveprovided a rewhich may be hardened and tempered. The pawlis so mountedthat when the lay swings upwardly and 'rearwardly, the engagingtoothwill cause the endnof the latch to hook from one movable block 32with an engaging tooth 31 over the tooth and to retain the lay.

A. bracket v27 may berigidly secured to the cross rail 11 andbe adaptedto carrya removable buffer plate 29 in addition to the pawl 20.Thebuffer plate serves to take up the shock of the lay when it isarrested in its rearward movement. The buffer plate may be any' flexible-material-such as rubher or fiber whichmay be changed when the impactsurface is worn. The rock shaft 22 extends across the frame and issupported by bearings positioned on the cross rail 11.

35 shown in my prior Patent No. 1,002,163, is operated by mechanismdescribed and claimed therein. The position ofthe rock This shaft,corresponding to the rock shaft thereof, being connected to the rock armand the lower end to the pawl.

In operation, the position of the rock arm,

connecting link, and pawl, with relation to the rock shaft is such, thatthe pawl at the center of the machine is synchronized with.

the retaining devices at both ends of the machine. In other words, whenthe cam mechanism operates the rock shaft 22 to release-the retainingdevices. at the ends of the lay, then the rock arm 21 is also movedandthepawl 20 is caused to move-with it. Assuming that the lay hasimparteda final blow to the wire cloth and is striking the buffer plate,thenthe machine is timed, so that the pawl will engage the hardenedtooth and retain the lay against the buffer plate, therebypreventing.vibration.

It will be seen'from the foregoing description that I have provided amechanism which will effectively prevent vibration at the center of thelay and that this mechanism is adapted to beattached to and coordinatewith existing wire weaving looms.

Having thus described my invention I claim2- 1. In a 100m, thecombination with a frame of a lay means for engaging the layintermediate the ends thereof andv adapted to hold it at the end of itsrearward swing.

2. In a loom, the combination with a frame, of a lay means for operatingthe lay, a latch mechanism intermediate the ends of the lay and adaptedto engageand steady it at the end ofits rearward swing.

3. In a loom, the combination with a frame of a lay means foroperating-thelay, alatch mechanism pivotally mounted on the frameintermediate the ends of the lay. and

I adapted to hold it at the end of its rearward.

swing.

4. In a loom, the combination with a frame of'a lay means for operatingthe lay, a latch mechanism near the middle of the lay and means forengaging and disengaging the said mechanism independentlyof the layoperating means. g

5. In a loom, the combinationwith a lay,

of amember intermediate its ends and carthe said member, and means forengaging and disengaging the latch, whereby the lay may be momentarilyheld at the end of its rearward swing.

6. In a loom, the combination with a frame of a lay, a latch carried bythe frame, and adapted to engage the center portion of the lay when itis at the end-of its rearward swing,-and to momentarily hold it, andmeans for operating the latch.

7. In a loom, the combination with a frame of a lay, a fixed membercarried thereby, a fixed support on the loom frame,

a latch pivotally mounted on the fixed support and adapted to engagethesaid member intermediate the ends of the lay, means for operating thelatch, and means for absorbing the impact of the lay at the end of itsrearward swing.

8. In a loom, the combination with a frame'of a lay, an engaging blocksecured substantially at the center of the lay, a support on the frame,a member mounted thereon and adapted to engage said block wherebyvibration of the lay may be prevented when it is near the, end of itsrearward swing.

9. In a loom, the combination with a frame of a lay, a latch pivotallymounted on the frame and adapted to ei'igage the lay intermediate theends thereof, a rock shaft, means connecting the rock shaft with thelatch, and means for operating the rock shaft whereby the latch will bedisengaged.

10. In a loom, the combination with a frame of a lay, a fixed support onthe frame, alatch pivotally mounted on the said support and adapted toengage the center of the lay, a buffer plate on the said support admited to retard the, rearward motion of the lay, a rock shaft supported onthe frame. a rock arm associated with the said rock shaft, a linkconnecting the rock arm with the latch. and means for operating the rockshaft whereby the latch will engage and di'sen gage the lay. 7

In testimony whereof, I hereunto ai'fix my signature.

HAMILTON LINDSAY.

